The State of Equestria created many a clandestine organization in its time, though not a lot of them survived the harsh reality of the present days.
After all, who needs The Mage Guild when there's not much a magical mystery to solve anymore or the mighty Celestial Berserkers when the last major war is anything but a distant memory, a mere footnote in obscure history books. Though still existing, even the covert and secrecy enshrouded S.M.I.L.E is not as big and omnipresent as it used to be in the decades past.
Most, almost all in actuality, such institutions withered and faded into obscurity under first Celestia's and now both sisters benevolent rule. All... except one.
For Central Requisition Bureau is not one such mysterious agency. They are rather upfront that they want your artifacts.
They will come and they will take them.
For your own good.
...At least, that's what Ardent Point Agent 8 likes to think.
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I'm terribly sorry for the lack of cover art. For once I have absolutely no idea for one, or if I have, it's beyond my skills to make it. Maybe there's gonna be one when I motivate my plump ass to do one.